| Origin and Dynamics of Dissolved Organic Matter in a Mariculture Area Suffering From Summertime Hypoxia and Acidification | |
Zhang, Yong ; Gao, Xuelu; Guo, Weidong; Zhao, Jianmin; Li, Yanfang
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| 发表期刊 | FRONTIERS IN MARINE SCIENCE
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| 2018-09-27 | |
| 卷号 | 5页码:UNSP 325 |
| 关键词 | mariculture hypoxia acidification dissolved organic carbon chromophoric dissolved organic matter Northern Yellow Sea |
| 研究领域 | Environmental Sciences & Ecology ; Marine & Freshwater Biology |
| DOI | 10.3389/fmars.2018.00325 |
| 产权排序 | [Zhang, Yong] Shandong Univ, Inst Marine Sci & Technol, Dept Marine Chem, Qingdao, Peoples R China; [Zhang, Yong; Gao, Xuelu; Zhao, Jianmin; Li, Yanfang] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Environm Remediat, Yantai, Peoples R China; [Gao, Xuelu] Univ Chinese Acad Sci, Dept Marine Chem, Beijing, Peoples R China; [Guo, Weidong] Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen, Peoples R China |
| 作者部门 | 海岸带信息集成与综合管理实验室 |
| 英文摘要 | Based on six cruises from March to September in 2016, we investigated monthly distributions of dissolved organic matter (DOM) and ancillary water chemistry parameters in a mariculture area in the Northern Yellow Sea, where summertime hypoxia and seawater acidification were observed. The most severe oxygen depletion (hypoxia covered approximately one-third of the aquaculture area) and the largest pH decrease (8.07 +/- 0.05 in surface layer vs. 7.66 +/- 0.07 in bottom layer) were revealed in August. Concentration of dissolved organic carbon (DOC) and the absorption properties of chromophoric DOM (CDOM) were used to characterize DOM. Results showed that DOM mainly originated from marine in situ processes. In March, a DOM pool with the lowest DOC concentration of 211 +/- 23 mu mol L-1 and nearly uniform optical characteristics were presented in the well-mixed water column. In August, however, DOC increased to 361 +/- 29 mu mol L-1 in the surface layer and 342 +/- 25 mu mol L-1 in the bottom layer. Two non-linear relationships between the absorption coefficient at 355 nm [a(CDOM)(355)] and the absorption spectral slope over 275-295 nm (S275-295) were revealed. According to modeling results, the non-linear relationships were mostly caused by the conservative mixing of a refractory CDOM pool with a freshly produced CDOM pool. Apparent oxygen utilization in August was positively related to DOC, but not to acoom(355) and S-275(-2)95, presumably due to multiple sources of CDOM in bottom waters. Both a(CDOM)(355) and S275-295 respond largely to decreasing pH; however, they would be less affected by ocean acidification since this process leads to a limited pH decline. |
| 文章类型 | Article |
| 资助机构 | Strategic Priority Research Program of the Chinese Academy of Sciences [XDA11020702] ; National Natural Science Foundation of China [91751207] ; Fundamental Research Funds of Shandong University |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | EAST CHINA SEA ; COASTAL WATERS ; YELLOW SEA ; MICROBIAL TRANSFORMATION ; ABSORPTION-COEFFICIENTS ; GLOBAL DISTRIBUTION ; OPTICAL-PROPERTIES ; MOLECULAR-WEIGHT ; SISHILI BAY ; CDOM |
| 研究领域[WOS] | Environmental Sciences ; Marine & Freshwater Biology |
| WOS记录号 | WOS:000457237800001 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/24533 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室_海岸带信息集成与战略规划研究中心 海岸带生物学与生物资源利用重点实验室_海岸带生物学与生物资源保护实验室 中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室 中国科学院海岸带环境过程与生态修复重点实验室 |
| 作者单位 | 1.Shandong Univ, Inst Marine Sci & Technol, Dept Marine Chem, Qingdao, Peoples R China; 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Environm Remediat, Yantai, Peoples R China; 3.Univ Chinese Acad Sci, Dept Marine Chem, Beijing, Peoples R China; 4.Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yong,Gao, Xuelu,Guo, Weidong,et al. Origin and Dynamics of Dissolved Organic Matter in a Mariculture Area Suffering From Summertime Hypoxia and Acidification[J]. FRONTIERS IN MARINE SCIENCE,2018,5:UNSP 325. |
| APA | Zhang, Yong,Gao, Xuelu,Guo, Weidong,Zhao, Jianmin,&Li, Yanfang.(2018).Origin and Dynamics of Dissolved Organic Matter in a Mariculture Area Suffering From Summertime Hypoxia and Acidification.FRONTIERS IN MARINE SCIENCE,5,UNSP 325. |
| MLA | Zhang, Yong,et al."Origin and Dynamics of Dissolved Organic Matter in a Mariculture Area Suffering From Summertime Hypoxia and Acidification".FRONTIERS IN MARINE SCIENCE 5(2018):UNSP 325. |
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